The Real Mermaids of San Marcos, Texas

My best friend from high school and his sister both worked at Aquarena Springs when they were in college. He drove a glass bottom boat, and she was a mermaid. They were perfect college jobs, with lots of interesting things going on. My friend has a story about how he accidentally went over a duck with the glass bottom boat. The passengers got to see the duck tumble around under the glass, then heard it hit the propellers. The boat left a trail of feathers and blood behind it as it glided over the water.